Car-coupling knuckle.



B.F.HAUGH. f

GAR COUPLING KNUGKLB. PPLGATION FILED MAIL-14,1912.

Patented Nov. 11', 1913.

FICE.

Bmd'l'lihl. F. HUGH, 0F ANDERSN, INDILNA.

CAR-COUPLING KNUCKLE.

Specification of Letters Patent.

Patented Nev. ii, lois.

original applications iiechllugust 11', 191), Serial Nos. 5765711 and 575,712; Divided and this application iedzwarch 14., 1912. Serialllo. 683,825.

- is a specification.

l integrally with the The object of nay saidinvention is-to pro' l vlo vide a knuckle for car couplers, the Wearing Y points of which will be re-inforced by har- ",dened metal capable ofprolongin thel life of the knuckle y ad'ording to sai Wearing parts greater resistance to the Wear than can be adorded by the metal of which the body of the knuckle is composed.

lt also consists in providing a knuckle having said supplemental Wearing parts cast body of the knuckle and Wearing surfaces thus provided of a smooth and true contour and accurately located in the knuckle to secure the best results.

The processes bywhieh said knuckle is formed are more fully described in my applications #576311 and #576712, filed August 1l, 1910, and of which the present application is'a division.

Referring vto the` accompanying drawings which are made a art hereof and on which similar reference c aracters indicate similar parts: Figurel is a perspective view of the car coupling knuckle constructed in accordance with my said invention, Fig. 2, a detailed section `on the dotted line 2 2 in Fig.l

l, lig. 3 a detailed section on the dotted .line 33 in Fig. 1, and Fig. 4 a cross section yon the dotted line i-Ll in Fig. 1..

ln said drawings the main body of the knuckle is designated by the reference letterA and is of a standard or any approved form and composed of cast metal, suchas is usually used for the purpose.l The hole for the coupling pinin said knuckle is provided vwith a tubular lining l() which is preferably cast therein in the manner described in my above mentioned application #576,711

` Said lining consists preferalhly""of metal having the characteristic of hardening during the process of cooling after the casting operation has been completed. The `said tube extend to points just Within the outer limits ofthe pin hole so that the cast metal overhangs the ends thereof and thus i secures 1t againstl the possibility of any loosening or accidental removal.

ends of 'The-insert plates 11 are embedded in the Wearing-face of the ear of the knuckle, thecenter ofthe plates being located on thedraft line. The edges of said plates are also completely surrounded by the cast metal so that they are substantially embedded in the casting. Their edges are preferably tapered.'

. so that the metal of the casting overhang's said edges somewhat andusecures a dove'r `tailedconnection. ln their ends are formed centrallyl located notches in which anchor pins a engage, said anchor pins being partly in the cast metal and partly in said notches y and located on the draft line. By this means the said plates are centrally secured on the draft line and being formed of the proper contour are held in position Whore no change or irregularity .in the proper contour of the wearing face Will bemade. Said interlocking pins and notches serve to hold said plates securely aga'inm lateral displacement even after the .overhanging portion of the casting is Worn away.

ln the construction of the knuckle it is important to secure uniformity in the Wear ing life between the several portions there of. To this end the plates 11 and pin hole line l0 coperate and prolong the ordinary life of the knuckle uniformly. Whileeithcr of said improvements Will serve to prolong the life of its particular part of the knuckle, one Without the other will not be as efficient inasmuch is the life of the knuckle is only as long asl'the life of any one of its parts. i

uVihen---theJoin hole is Worn to the point Where it must be replaced the life of the knuckle is gone, even though the Wearing face of the ear may yet be in eilicient condition, and the reverse of the statement is equally true. The best results and greatest advantages are therefore attained in a knuckle comprising all of the improvements set forth.

The use of such a knuckle will notponly rc-l sult in economy :in-equipment by saving a large part of the expense for the knuckles on account of their much longer life but also in greater safety, inasmuch as many accidents are `caused by the breaking of knuckles at one or the other of these points or because of their ineiiicientv service resulting from Wear in one point or ythe other or both,

causing a looseness between the parts which permits the parts to separate and the train to divide.

Q Loveeee Having thus fullydeseribed my said invention, what I claim as new and desire to Secure hy Letters Patent, is-

l. As an article of manufacture, a knuckle for car-couplers formed with its pin hole lined with tnhe of sel-liardeniiig metal secured therein during the process of casting with ,its ends oyerhung by seid casting, and with the 'wearing face of its eer armed on the draft line with wearing plates also composed of self-hardening metal secured in place during the process of casting and with their edges completely surrounded and embedded in the cast metal and interlocked therewith, substantially as set forth.

hardened metal plates inserted in the face of its ear on the draft line .and secured therein during the process of casting by embedding` said plates in the cast metal, and

BENJAMIN F. HAUGH. l [L. sf] lVitnesses HARRY HAUGH, XVM. J. `l/VHITEFORD.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

